Multicolor-printing press



V Y 1930- I c. ALLEN 1,757,697

-MULTICOLOR PRINTING PRESS Filed Jan. 25, 1928 4 Sheets-Sheet 1 Jzz 21472201" 716126; 322 Lfde #7125 M May 6, 1930. C ALLEN 1,757,697

MULTICOLOR PRINTING PRESS Filed Jan. 25, 1928 ,4 Sheets-Sheet I5 HlIx May 6, 1930. c. ALLEN I MULTICOLOR PRINTING PRESS Filed Jan. 25, 1928 4 Sheets-Sheet 4 fizz/afar M tid M77222 yfim WMf/Q .c

Patented May 6, 1930 mum c wsrrmmnie new J Applicationfiled January 525; 132a '=S;eriaI-" No: $493334" The object, of any invention ime proyide a multicolor printingpress-of simple, du rable,-. and comparatively inexpensryeg,;con-

- fed: to the press.

Anotherobject-is to provideia printing i press-in which standard-"type-and cuts are used and by an offset process, offset work 1s produced without the expense ofhaying the cuts reversed or' haying ay-stock ofreverse type which "is" necessary in-or'ollnary offset work.

' Still another object ;is toprovide an, ap-

par-atus and a process whereby aprin'ting roll is adapted to receive the impressions from the transfer roll and l to then print 1 them simultaneously upon .the Work.

V Still'afurther object is'to provideaprinting press which produces multi-color printing with oneimpres'sion on the work and print in colors by providingaseries of cuts.

thereby eliminates the necessity" of drying one color beforethexnext one is applied. 7

It is, a common practice among-printersto successiv operations. Us'u'ally the inkis allowed to dryafter oneimpression is' taken and before the next. impression. is taken. H ever, whether. he.successwelmprfision are separated byshort or longer intervalsof time, itis extremely difficult to secure ,1ac curate: reg stration of;.colors, because the paper :stocklicontracts, expands andi'stretches depending upon its 'nature,-.- ariations in hum1d1tyand. yaraations ln temperature further object of my present -=in.vention theretorelis' to provide; avmachine and proc v ess, whereby the aforementioned "difficulties in securing registration are eliminatcdkby deposit ng impressions from theyari-ous-cuts or -:type faces: upon a; single'trafnsterelement or upon a si'ngle printing-roller so that when the printing impression is made all of the' differentcolorsare. transte rred -to-"the printing stock at one operation. i l thus-eliminate the problem of securing properregistration arisingfrom variations" in the; condition of the 7 stock. I p a v lWi-ereonecolor is deposited onstock at one impression and another color at another-Lim- PIfessi-on, it becomes of great llllPOlftancqtO register-the stock on the press with extreme accuracy for. thesuccessive operations, the use of-my'pr'ocess, and apparatusgthis problem is entirely eliminated because of the fact that all of the colors are; deposited onithe stock at one impression. i i l 1 However, with process and apparatus, t is ecessa y tqsecure accurate registr ion of colors on the printing'element,Whenlthese colors are taken from a plurality ofcuts, land this registration 7 I secure by certain "novel features of construction nd combinations hereinafter more" fully seti forth. V

'Still, a lfurtheriobjeet is tolClesignmy pres so thatfiat cuts can be used in it 'eyenthough it is of the rotatingtype whereby ordinary stockcuts whichare in considerable circulation in the present day canbereadily used in my machine and new cuts; of. speoial'design willnot havetobe madeifor the customers. i y I ,Stilla further-object lSgllQ PIOVidt-B in, a pressof this kind a work supporting carriage whichgoscillates through.-

predetermined path, so ,that wqrlrmaybe.placedthereonand carried thereby While it is beingprinted.

, Still ajurther object is to proVi'de-mecharni nifor rotating the transfer roll- 1 and printing roll; soxthat1they -fat all times syn: niZ- durinsith mt t oni otthe pr sse to further provide in connectionwith this mechanism, means 'for positively insuring that no slippage of the transfer roll surface relative to thecut surfaces or the printing roll surface will occur.

Still a further object is to providea stationarypl'aten to support the cuts or thelike so that they can be inked with different colors of inks, the transfer roll may receive im- V in connection with a pressions from' them (whereby the several impressions are-all assembled in one group, parts of one impression overlapping the other if necessary) and the printing roll may receive the impressions from the transfer roll for depositing. them simultaneously upon the work in the press, all of these'rolls being ro tatably mounted; 9 1

Still a further object is to provide a modified form in which the platen itself is rotatable and the inking and transfer rolls are stationary relative to the platen although they are pivotally mounted for contacting taken on the line 2' 2 of Figure 1.

porting carriage,

' Figure 3 is a horizontal sectional view taken on theline 33 of Figure 2, 2 Figure 4 is a vertical sectional view take on the line 44 of Figure 1 and illustrates the'mechanism for oscillating the work sup- Figure 5 is a detail sectional view onthe line 55 of Figure 2'show1ng the construction of the work supporting carriage.

Figure 6'is a sectional view similar to a portion of Figure 2 illustrating the work supporting carriage and the printing roll in two diiferent'positions other than Figure 2,v

one of these'positions being in solid lines and the other being in dotted lines.

Figure 7 is a vertical sectionalview on the line 7'7 of- Figure 1 showing the limit cam used'in my press and omitting a rolldrive gear which would actually appear in front of the limit cam. 1

Figure 8 is a vertical sectional view on th-eline 8 8 of' Figure illustratinga transfer roll cam.- r

' V Figure 9 isa vertical sectionalview on the line 9-9 of Figure 1 illustratingv the ink roll cams and their relation to the ink roll cradles.

Figure 10 isan enlargedsectional View on porting legs ifso desired. Extending upwardly at the forward end of" the base 10.is a frame member 12. A similar 1;:

the line 10 -1O of Figure 1 illustrating a gear train between an anti-lash pinion on the trans V fer roll and a pinion on the printing roll.

Figure '11 is a sectional view on the line 11-11 of Figure 10.

Figure l2 is a sectional view on the line .12'12 of F igure-2 and illustrates one'of the ink roll cradles and the parts supported there- 7 by. I V V V 7, 4

Figure 13 is an enlarged sectional view on the line 13-13 of Figure 12. i

Figuresl and 15 are views similar to the left hand end of Figure 12 illustrating portions of thejothertwo ink roll cradles showing the relation of certain parts thereon to the first ink roll cradle and to the various ink roll camsof the printing press. 7 i r Figureyl6is an enlarged sectional view through either the transfer roll or the printingroll illustrating its construction.

Figure 17 is ,a sectional view onthe line 1717 of Figure 2 illustrating the manner of securing a .chase to one of the platen surfaces of the platen. V 1

"Figure 18 illustrates a sectional view through a'printing press of modified Iconstruction in which the platen rotates instead of remaining stationary and .a portion, of

the rotating'member is provided with a rubher blanket to serve in place of the printing roll; and Figure 19 illustrates the same idea as-designed for the use of arc-shaped cuts which are usually castin leadand are used extensively by newspapers. 7 'On the accompanying drawings I have used the reference numeral 10 to indicate a supporting base on which the various parts of1 my multi-color printing press are mountec.

The base 10 may either rest on a tableor oth'ersupport or may be provided with supframe member 1 1 with the exception of being of a different shape extends up from the rear,

end of the base. vThe frame members 12 and 14:

are provided for supportingastationaryshaft 16. In order to support the shaft 16 and see curely clamp it to the members 12 and 141'. provide these members with one sideslit as indicated at-18 and I use a cap screw 20 in each of the members for securely clamping the shaft 16 relative to the hubs formed on the upper center portions of the members 12 and '14. 7 r V Keyed and clamped, to the shaft 16 isa' platen 22 having a plurality of platen surfaces 7 2 1, 26, and 28. A bushing (best illustrated in Figure 3 of the drawings) is secured to the platen 22 and keyed to the shaft 16. Keyed to the bushing30 is aroll drive gear 158, a limit cam 34, a transfer roll cam 36 and three ink roll cams 38, 40, and 42. From the. foregoing description: it will be obvious the-tithe gear 158 anditheicamsfid', 3.6, 88, 10 and {L2 as Well,

as the [platen 22: are mounted stationary relaq The rotor: head 46-is-provided with asleeve' like extension 52 extending toward the rear of the pressaandattached to a rotor, gear 5 1. Thegear 54 is provided with aball bearing- 55. a A pair of Work carriage actuating cams 56= and 58 is. keyed tojthe sleeve 52. From-the construction-.-ofthe; parts-just;described it Will beobviousthat-whenever the gear 5 1 is rotated the cams-56 and 58 and the rotor heads '44: and 4:6 together-With the tie members. 48

. I pro-vide a pinion=60=best shoWnQin Figure. 1 which is mounted on a shaft 62. The shaft will rotate. For rotating the rotor gear 54 62 is rotatably mounted in :ball bearingsin abracketfi t and in the iramemember 1 1. $1. pulley 661s securedt'o-the shaft'62and'inay;

be belted'toan electric motorforthe purpose ofdriving the press; Any type of starting and stopping mechanism such as a clutch and brake; may .be; employed. for operatively connecting the electric motor to, thepulley 66 or. disconnecting it therefrom. 7

To each-oi the platen surfaces 24, 26,1 and 28, I secure chases68, 7,0, and 7 2. v (See'Figfsu 2 and 17.) Each chase is of the ordinary construction comprising a frame into Which a Wooden block 74 ma bevlocked by the inser tion of blocking 76, (commonly called furni-' ture) and set screw-:means for clamping the furnitureagainst the. block. The block 74 has on its surface ordinary p'rintersftype'ZS which isstandard. Instead of the type, a half tone photograph or line cut, cast in a lead composition may be securedto theblock 7 4. Thencombinati-onof the block .74. and the type'i', 7811s commonly known as a cut and will'iereinafter be referredto as cuts A, 'B, and.

The :chases themselves are clamped to the platensurfaces in the following described will be 33; Thus the surface of the drivesgear 158 servesitofialign the chase when the chase is: 'forced thereagainst and the pin centers the: chase ;so thatzthe' cuts A,B,- and C precisely positioned on the; platen surtace's. e

; Foraforcing the chase L against the: gear I prowide: oaacla mp bar 23 secured toja lug.

2 22 extendingi inwardly fromtheplaten frame by means of a cap serew28 iTheinnerzend V of the bar 23. engages a. flange v69 jonthe hub of the platen and the outeryend: of; the bar engages-Lina groove -71 of theychase, The

chase is :forced to: contact with r the; gear: 158

by tightening the screw 23?. Thusthe chases are readily removable and can beJinterchanged when ;it.' is desired to: exchangethe colors on the finished WOI'lL' lni c z'ng'm'echanism i n. isrvdesirable to ink each .ofIthe-icuts h s;

andG 'With a different color ofink 31163111 or-V. der to dothis, I provideink rolls-.80 .82,and 84 so f (Figure 2.). 1 Each ink-roll is made dreams) I sitionor rubber andis mounted on agshaftir8dr A cradle88 is provided f0r=supportingeach of the ink rolls 80, 82, and 84:. and isinceithese cradles :are similar IlWill describe but one of themgivingthe parts of the, otherstheisame reference numeralszvvith the addition of the characters 'fa and 'b; In'ithe'embodiment of: my press ashere illustrated l -haveish'orvn three cuts an'dithree ink rolls. However-nit is obvious that any numberaofucuts'aandiink. rolls, "may; be used by designing the; press larger; In this manner anyvdesinedrnunrher' ofcolors can be printed,

Figure 12 illustrates the cradle R which,

comprises a U-shaped portion 90 if, having bosses 92 and 94 formed on itsends. Extending from the bosses 92 and 94 are trunnions 96 Which-are mounted vin ball bearings, 98 T The ball bearings 98 are'supported' by brackets 10,0 extending from the rotor heads344 .7

Mounted in the ends of the: U, -ish-aped portion 90' are ball bearings. 102 which receive trnnnionsglO i formed onthe shaft 86 otthe, ink; roll. A- pinion 108is SJlSOQIHOlHItBCl TOH the shaft 86. The ink roll and 1119131111011 108 all rotate Withthe shaftr86 and the mechanism to causesrich rotation I Willi hereinafter-d scribe. V f i An ink fountain and necessary distributor may be provided forthe inkgroll. Iniorder to evenly distribute the ink on each ink roll I may provide a distributor roll 110. The distributor roll 110 is rotatablyrmounted ona shaft 112. Secured. to theishaft 112 inside the roll 110, Whichfis of holloW-construction is a bevel pinion 1'14. Mounted on the shait 112 for'rot'ationwith the roll 110 is a supporting member 116 for rotatably supporting a [bevel gear 118. The gear 118 meshes'With; the pinion 114 and is connected by a link 120 toa pin 122 mounted in 1 one end of thefroll 110. A collar, 12 1- is pinned to the shaft 112 Landthe member ll6 rotates between this collar, and the bevel :pinionf 114,

JThdShitfi 112 is held against rotation and is constrainedtoxmovetoward thesink roll 80 by the following described mechanism,

Slidably and rotatably mounted in openings 126 formed in the U-shaped portion 90 is a pair of pins 128 (Figs. 12 and 13) One end of each pin 128 terminatesin a stem 130 which extends through afiange 132 and an enlarged opening 134. Lock nuts 136 aremounted on the free ends of the-stem 130 and a spring 138. is'interposed between the lock'nut's 136 and the flange 132. 1 V,

Formed in one of the pins 128-is a slot opening 140 and formed in the other pin 128 is an L-shaped notch 142. Theends of the shaft 112 are flattened as at 144 so that they can engage in the slot 140 and the notch142. To assemble the distributor roll 110 in thecradle 88 first one end of the shaft 112isinserted in the slot 140 and the other end thereof is then inserted in the notch 142. The springs138 will thereafterserve to keep the distributor roll 110 in close .contact with the ink roll so that the ink roll will, uponrotation impart rota tion tothe distributor roll 110.

As the distributor roll llO is rotated, the bevel gear 118 will also rotate and, due to its link connection120iwith the distributor roll head, thefdistributor roll will move back and V forth 'longitudinally on the shaft 112 as it rotates. This evenly distributes the'in'k on the ink roll. It is obvious that any other practical type of distributing mechanism might be used in place ofthe one I have shown, for the purpose of insuring that the ink will evenly coat the ink roll-80 'sothat a good j obof printing results when the press is operated.

f Pivotally mounted on a lug 146 extending from the bossc92 is an arm 148 (Fig. 12) 'A cam roller 150 is rotatably mounted on the arm 148 for bearing against the boss 92. The

set screw 152 alsoserves as a means of adjust- Inent whereby the path ofthe ink roll may be varied relative toth'e cam surfaceof the cam 42. For keeping the roller 1 50 tight against the cam 42 I provide an arm 154 formedon the boss 92 and a spring 156 connecting this arm to one of the tieme'mbers 48 of the rotor-serves to hold the roller 150 against the cam' 42.- j v The cradles 88 for the ink rolls 82 and 84 have similar arms 148 and 148 with: rollers 150 and 150 adapted to engage the ink roll cams40 and 38 respectively. Arms-154 and 154 and springs 156 and156 serve to hold the rollers'150 and 150 against the cams 40 and 38. 1 f

For rotating the pinion 108' and consequently the ink roll 80 and distributor roll 110 I provide a gear 158 of special design. The gear 158 hasa circumferential portion 160 and rack portions'162 whereby half-of it is of substantially hexagon-shape and the other half is semicircular. This is clearly'illustrated in Figure 2 of the drawings. The pin 82, and 84 rotate at all positions during their travel as the printing press rotates.

g 7 It is desirable in multi-colorwork that each of the ink rolls be supplied with adilferent color of ink and that each ink roll ink only one of the cuts A, B, and C and none of the others. In order to accomplish this, the cam 38 is provided with a high portion 38 which causes the roller 80'to contact with the cut A (Figs. 2 and '9). The high portions 38 and 38 of the cam 38 are lower than the portion 38 so that as the ink roll 80 travels past the cuts B and C it will not contact with'them but yet the pinion 108 will remain in .inesh i with the rack portions 162 of the gear 158.

In this manner only the cut A is inked the ink roll 80 and yet the ink roll rotates throughout its entire'travel until itis again in position to ink the out A. I

In a similar manner the cams 40 and 42'are willink only the'cut Bandthe ink roll 84 will inkonly the cut 0. J y

In Figure 7' I have illustrated theroll 80' as provided with'icorner portions'40? and 42 contacting with the cut A and as it continues in its travel, it will be raised by the spring 156 from the out B and also from the cut C as illustrated by the dotted line 164.

'16) andis covered witha rubber blanket180.

A socket is formed in the portion 17 8 of the shaft to receive a ball bearing 182 which is mounted on'a trunnion 184 extending from the bracket 172. A roller 186- and a pinion 188 are mounted on the shaft 17 6. The rub-' ber blanket 180'is held on the-portion i178 by a lock bar 190 having pins 192 extending through openings formed in the edges of the blanket. The edges of the blanket and the bar 190 are mounted in a longitudinal depression 194 formed inthe portion 178 of the shaft 176. Screw means 196 are provided for holding the bar 190 in position in the de pression194. The shaft 176 and the blanket 180 mounted thereon form a rotatable printing roll which I willdesignate generally by the reference character D. i 5

From the foregoing description it will be obvious that rotation of the: rotor will carry with it the printing roll Din a circular .sion is transferred from the path. Meansv for rotatingthe printing-roll 7 D Will hereinafter be described. l

7 Transfer roll mechanism In. the construction of my press I provide a transfer 1 roll Ex comprisin .an enlarged shaft 198 covered with a rubber blanket. 200 which .isheld to the-'shaftf198- in I a manner similar to thatfor-holding the-blanket 180' to the shaft 176. The ends of thesha'ft "198 arejournalled "in ball bearings mounted'in arms 202 extending from a 1 rock shaft 204. The ends of the rockishaft 204. are mounted in ball bearings 206 which are supported by brackets .208 extending from the rotor heads 44 and 46. a '7 c w An arm 2l0'extends from therock shaft. 204eiand :has rotatably mounted lonits free end,-a roller 212adaptedto coact withthe transfer roll cam 36. Thetransfer -rollcam 36isbest-illustrated in Figure 8 ofthe {drawingsand comprises a circumferential portion 214 andraised portions216. The raisedpor- .tions 216 contacting withthe roller '212as the printing press rotates causes the transfer r011 itocontaizt with eachof the cuts A,- B, and C so as to receive the'impression from each so that after having passed all; three of them,

the impression on; the transfer roll consists of three separate impressions of three disti-nct-color'sassembled toproduce a composite three color reproduction.- During the travel of the transfer roll E as the press 'rotates' 'it will be rotated in its bearings by apinion218 (F ig.-11). The pinion 218' meshes with the teeth of the gear 158m a manner similar to the pinions 108 of. the inkrolls. After the transfer roll E has received a completed im pression, the roller 198* contacts =with the raised portion 1660f the cam 34: which moves the transfer ou away from. the center of the press and causes'its :contact with the printing roll D. In: Figure8 the path ofthe surface of thetransfer roll is indicated by the dot and dash line 222. l Vhen-theztransfer-roll E-isr moved away from the center ofthe .press and contacts with theprinting roll D (which is rotated bya gear train hereinafterto be described) the impressionthereon is transferred to \the printing roll-so, that it can bedeposited from a the printing rollonto the work placed in the press. Therollsv D/and E remain in contact witheach other during justqone revolution of them so that the complete imprestransfer 'roll to the printing roll. a r c For rotating the printing roll D I provide a gear train comprisingarpinion22 l' journaled between one of the arms 202 :of the rock. shaft 204e-and another .arm 226' zextendingatherefrom. Another pinion: 228 meshes ;withi. the pinion 224: and also with the pinion 188 .on theprinting roll shaft. The shaftfi230on whichthe pinion 228 is journaled is supported by, a-linln232 i Theilink232t-cemprisesiaa pair of sides232 aand a cross member 232 The V imparted: fromi the; :pinionu218 'through the piniens 224,328,- .and 188 to the printing' roll D andthat the transfer roiliErmaybe moved towardror away from'the. printing IOlilJDidllG to .thep-ivotal coimeotions:hetweenrthelinks 232 andr234a. V z il shile the transferrolliE is ina-contact With the: cuts, 1A';;Bj; and C for the :purpose 10f receivingathe. inipresglons therefrom,iit is necesr sar. ,thatno sli. pa eoecur betweenthe trans fer rollisurface and the cuts- .Ishaveatherefore designed the .pinion 21.8 of the. antisla'shizva;

:riety which is best illustrated in Figures and 11 of the: drawings. The pinion 2l'8 eonsist-siofg two sep arate' :pinions 21f8' 'and 218hpo- Q sitioned'faoe to face. The pini-o'n218". is lkeyed to the transfer roll'shaft 198 a k'ey. 21'8 'and the pinion218? is free to rotate.thereon;=-.'Pins 236 are attached'to the pinion2l'8 and'eXt-end into islets" 238 formed in the 4pini0n i2=18 1 A spring 240. is interposed between one iend of eachisloti 238 "and the pin 236iesz'tendi-ng'there in; This construction causes thepinionsj2l8 and 21:8 to rotate slightly arelative: toea'ch other so as to (in'efiect') jenlargethe teeth lot the pinion 218. :Thiszis cleanly-illustrated in Figure 10 :of; the drawings showing 'theteeth .enlarged 'tofillthe teethofthe gear 158.; The widt-h-lofthe pinion .224 is such that it meshes only-with the pinion218 soithat the teeth-of movement of the -teeth: of l thepinion' 2l'8.

- Nhenthe transfer roll E-is movedto-contact withkthe printing-roll D,-thexpinions 218 and 218 enlarge inthe teeth of the pin-ion 188 so that no slippage occurs of theprinting roll riage -solthatworkican-beprinted-on fr'oin the printing roll D; The'work supporting car thepinion 224' will: not restrict the enlarging I ria'ge *is'best illustrated in Figuresf2, 5;and

Got the drawings and comprisesacarriage table 242 'havingdownward ly extending ears 244: Shafts-246' are mounte'din'theears 24-1 and rollers 248 arerotatably mounted -=on-the outer ends of the shafts 246.. The rollers 248 are designed to' travel in semi-circular tracks 250 formed in carriage "traek -.--'me1 n"bers 2 52 spaced from each other and extendihgup'from thesuppeiitingl base 10; The carr'iage 242 'is normally in the position' illustrated in Figure 2 but'is designed to move in the directionof the arrow 254 to the other'ends of the tracks 250 as shown in Figure 6'. l

A' block 256 is designed toiit and support the work 258. V I have illustrated a sheet metal plate to be printedon but'any other type of device such as match boxes and other advertising noveltiesmay be printed on in a press of this character by designing theblock 256 to suit thearticle. As the printing press rotates, the printing roller D swingsjthrough an arc and thework 258 will likewise swing through an are due to certain carriage actuating mechanism timed to operate ageprding to the operation of the press whereby the printing roll D will roll'across the surface of the work as illustrated in Figure 6. To cause rollingofthe printing roll D relative to the work 258, the

carriage 242 is moved in the direction of the arrow 254 at a slower rate of speed than the printing roll D which" moves in the same di rection however. 7 V V l Work'carfiage 'actuating mechanism I For the purpose of actuating the work carriage 242 and causing its movement in one clirection while the worktheron ls'being printed, and 1ts' movement man opposite direction, Wh1le the printing roll iscontinuing its jtravel with the rotation of the press, Fp'rovide the followingdescribed mechanism. Bearings 260-extend from the base 10. A rock shaft 262 is journaled in thebearings260 and, is provided with a pair of upstanding arms 264 connected bylinks 266 with one of the shafts 246 of the work carriage. A. third arm 266 is formedion the rock shaft 262.

Oscillatably mounted in bearings 268 extending upwardly from the bracket 64 and a similarbracket 270 is a carriage actuating lever 27 2. The lever 27 2 has pintles extending from opposite sides thereofsand into the bearings 268. The lower end of the lever 272 is operatively connected by a linkI274 to the arm 266 Fromtheforegoing construction it will be obvious that swinging motion of the lever 272 will impart the-desired movement to the work carriage 242. 1

Rotatably mounted on the lever 272 is a pair of cam rollers 276 and 278. The roller 27 6 coacts with the cam 56 and the roller 278 coacts with the cam '58. The cam 58 serves to'move the carriage 242 in the direction of the arrow 254 and the cam-56 serves to return it to the original position illustrated in Figure 2. When the carriage is in the dotted line position illustrated in Figure 6,,thecarriage actuating arm 272 is in the dotted lineposition illustrated in Figure 4.

. The cam 58 is provided with an abrupt rising portion 58 and a gradual retiring portion 58 so that thework 258 is moved quickly in the direction of the arrow 254m accordance with the rotationof the printing r011 D cam 56 is provided with "an abrupt rising portion 56 and a gradual retreating portion 56 oppositely arranged relative to these portions ofthe cam 58 so that the two cams at all times move the actuating lever 272 positively in both directions. The journal pins 280 on which the rollers276 and 278 are mounted may be eccentrically mounted in the actuating lever 272 so that slight adjustment can be had. "For the samefireason the pin 282' on which the transfer roller 212 is mounted may be journalled eccentrically in the arm 210.

On the transfer roll shaft E a bushing'198 is interposed between the bearing 202 and the gear'218. Rotatably mounted on this bushing isa cam roller 198 adapted to coact with the limit cam 34 so that as the transfer roll E is receiving impressions from the cutsA',

B, and C, itwill contact with these cuts just sufliciently to properly receive the impresslons.

Since the'transfer roll cam 36 is provided with a depression 220 for allowing the transfer roll Eto contact with the printing roll D as shownin Figure 8'it is necessary to provide the limit cam.34 with a raised portion 166 so that the cam 34 will be in contactwith theroller 198" during the transfer operation (Figs. 7 and Duefto any lost motion of the pinions' 218, I

224, 228, and 188, it is necessary to provide for a positive rotation of the printing roll D as the work'258 is being printed. This is ac complished by mounting a rack 243 on the table 242 in position to mesh with the pinion j188 of the printing roll D as this roll istraveling from en'dqto end of thework 258. 'Thisinsures that the chance for slippage between-printing roll and work will be minimizedi- Toprevent the printing roll D from pressing too tightly against the work and thereby .m'akin'g a smeared impression thereon due to squeezing'of the rubber blanket,I provide a cam bar 245. The cam bar is mounted on the-table 242 in position to be engaged by the roller 186on the printing roll shaft as the'printing roll rolls across the surface of the work 25 In Figure 18 I have illustrated amodified form of my invention in which the platen 284 rotates and the ink rolls286 do not rotate. Figures'l to.17 of my drawings with the exception of'rotating one part instead of an other- In the modification illustrated" in Figure 18, the ink rolls 286 are tied by rock shafts 288 so. that they can eithercontact with the cuts 29 0or not as necessary. I have illustrated three of the ink rolls 286 as contacting with threeof the cuts and the other two ink rolls are, arranged to contact with the remain- This is the same idea carried out in,

i on'an'arm 304 and adaptedto coact with the" ing two cutsfso thatthere is an inking rollfor each out and five different; colors mayf'he 1111'- pressed on the transfer T011292. When the to .position where they do not Contact vI fhave shown one cam-300 'fEor the ink'roll 286 and have illiistrat'ed'a roller 302 mounted periphery of the cam; The rca1n"300is pro videdzwith 'a por'tidni306 formed on a radius fromthe'fcenter'ofthepress so as to keep the inkv roll 286 from contacting with the blanket 294'. In Figure 19 1 have illustrated a medi 7 fiedform-of construction in which the platen 308is circular for receiving cuts 3lOwhich arefusuallycast mlead and used extensively forthe printing of newspapers. In thisconstruction no provision is necessary for moving; the "transfer 011*312 "toward or away from the'oenter oftlie machine as theltransi er roll must contact with each cut 310 and then with the printing'blanket 814. The cam 316 used for therlowermost ink roll 31'8 isfin the fdrn'isfof Ia 'oircle'with' a raised portion 320 adaptedito cause theiink roller to contact with its respective 'cut 310. 1 After the raised 7 portion 320has' passed the roller'322, the ink roll 318 will' drop tof position' where .it

does not contact with any of the "other cuts.

From the foregoing description it will be seen that Ihaveprovideda process by which aplu rality' of colors may be first impressed on one' transfer roll and thereafter deposited allat one time'on'thework so that it is necessaryto provide onlyfor proper register oi the transfer roll with the various cuts'instead of making several impressions on the 'work lII W lIlCl'i'CEISS thG work would have to be delicately positioned so that these 'seve'ral impressions would reister perrecny The 4 advantage of such a construction is very 'o'b vious as one printing operation on the'work is all that is necessary even though a great number "of colors are used. Fnrthermore,ll

liave'prov-i'ded for the adaptation of my press for the general type of cuts nsed by manufacturers and 'the' like so that their cuts can be us'ed zin my machine and newcutswill not have to i be :niadei By 1 the provision of! a transfer roll: and a printing' roll. ordinary printerslwtype: can behsetupg in my; machine and by the double ofi'set process 1 have outlined in my description,ytlie printing on the ork willbe in proper'positionior reading,

My printing process and "pr'ess'ma'ke it possible to print several diiierentcolorswithin ;-the same outline, oriwith parts jof one color overlapping the othen'all at one application of the impression upon tliezwork. The dif ficulties' experienced. in printing presses Wherefirst ones-color is impressed "on the paper and then "itilOl'lllI color'is impressed-and soon, are "that the paper stretc'hesfor shrinks betweenfimpressions unlessthe" humidity "and temperature of the'room" remains, constant and eventli'en theroll of papermfust be thor oughly tempered throughout to the and temperature of the press .room' betore printing is started. "Thesdiificulty is greatly 7 increased where it is necessary to'drythe ink n V between operations and before the next im-' pression; is applied; Where sheet metal t stampings are printed as illu strated-lin my drawings, slight'variations in the dimensions will oftencausenon-registryofthe'impres o r sions when the work is' put on the blockf256 for each impression of separatecolonf so In my process ftheseadiiiicnlties-are entirely' overcome because of "having-fthefre istry occur on elements" of the ipress iristeadiof on the work. ,Since these elements are all'p arts of machine operating in: the same room they will therefore av all tiines respond flexeactly alike "to the factors *of humidity J1 and temperature. I thejprovision 'of balPbear ings throughout theipressfthemisalignment a 0 exp'erien'ced 'with contraction andexpansion ofbronze bi'ishingsr andother )types of bear- .ings is overcome;- The" anti lash gear"take's careof all loosenessoccurring between the drive gear and p nions oIi-the transfer and op'ri-ntingrolls due to wear so that fpropefr registry its-insured at all times;

' There aremany other advanta esz'inherent in a structure of-this-"kind. For example, it is possible to use-three chases; ,In two of the chases-, 'I- may place cuts for printing partsofa reproduction in two colors. 'In-a third chase, I may place *type'; for printing either in a difierent colorj or 'in one of the colors used forthe cuts.

Y The outs'may be used for severaljobs while the type is used foronlypne j ob. I The'chases containing the onts may be leftfimthe aria chine, andthe chase containing the type may be taken out ;and form' containing other type inserted in the chasm-and the chase re-* placed; and a newfreproduc-tion made: employing. the same outs and different ink, the change requiring :onlythe replacing of zone chase. 7 1

Various "changes such :as' modifications as I :have shown in Fi'gures 18 and 19, maybe made-in the construction and arrangement of the: parts of my device without departing from the :real spiritandgpunpose of my =in-I 1 vention, and it is my intention to cover by my claims, any modified forms of structure or use of mechanical equivalents,'which may be reasonably included within their scope.

I claim as my invention:

1. A multi-color printing press comprising a a printing blanket adapted to travel in a circular path and to print an impression on a piece of work fed to the press at each revolution thereof, a plurality ofcuts or the like supported in said press, an ink roll for each cut or form whereby eachcut or form may be inked with a different color of ink, a transfer roll adapted to Contact with each of said cuts or forms aftersthey are inked and to thereafter contact with the printing blanket whereby all impressions receivedby the transfer roll are simultaneously deposited on said blanket, and means for rotating said transfer roll to'synchronize with the rotationof the press whereby perfect register of the impressions received from' the several cuts or forms results, said meanscomprising a seriesrof teeth 'adjacentfeach cut and an anti-lash pinion on said transfer'roll adapted to coact with said teeth. c f

2. A printing press comprising a platen having a plurality of platen surfaces, a cut or the like secured to each ofjsaid surfaces, a plurality of ink rollers adapted to eachink a cut or form ,of said plurality of cuts or forms with a different color of ink, a transfer roll adapted to contact with each of said cuts }or forms to receive impressions from them, means for rotating said ink rolls and saidtransfer roll comprising pinions on'said rolls and teeth adjacent theplaten'surfaces for meshing with said pinionsand aprinting roll for first receiving the impressionsffrom the transfer roll and then depositing said impressions onto work-fed to the press, said transfer roll being provided with an anti-lash pinion to insure perfect register of the impressions received from the several cuts or forms and deposited on the transfer roll.

or 3. A printing press comprising aplaten havinga plurality of platen surfaces a cut or the like secured 'to each of said surfaces, a

plurality'of'ink rolls adapted to each ink a cut or form of'said plurality of cuts or forms with a different color of ink, a transferroll adapted to contact with each of said cuts or forms to receive impressions from them,

or formswhereby the transfer roll and the printing roll, contact with each other, the printingroll receivingall said impressions simultaneously and the anti-lash pinion insuring against slippage of the transfer roll surface relative to the printing roll surface.

4. In a printing press for printing differs ent colors simultaneously on a piece of work, a base, a stationary shaft supportedthereabove,,a polygonal shaped platen supported on said shaft, a cut or the like secured to each of the platen surfaces of said platen, a'cage like rotor surroundingv said platen and rotatably supported on said shaft, a series 'of ink roll cradles pivoted on said rotor, an ink roll carried by each cradle and adapted to ink a certain one of said cuts or forms, a transfer I roll cradle pivoted on said rotor, a transfer r011 carried thereby and adapted to receive an impression from each of said cuts or forms and means for simultaneously depos ting the impressions thus received onto. work placed in the press, sa1d last means compris ng a printing roll to receive the impressions from the transfer roll and thereafter contact with such work. V p 1 5. In a multi-color printing press, a print ing roll adapted to travel in acircular path, means for depositing a plurality-of different colored impressions thereon and thereafter depositing all of said impressionsat one time onto Workplaced in the press and a work carriage adapted to receive. said a work and .to

travel in a semicircular path as the work is being printed.

6. A multi-color printing press comprising a polygonal shaped platen, a cut or the'like secured to each of the platen surfaces thereof, aplurality ofink rolls adapted to travel in a polygonal path and deposit ink of various colors on said cuts, or forms, means forcausing each ofsaid rolls to contact with only one of saidcuts or'forms, a transfer roll adapted to receive an impression from each ofsaid cuts or forms whereby the complete impression thereon comprises all the colors used, a printing blanket for receiving the complete impression from the transfer roll and means for depositing with a. rolling line contact the impression thus received onto work placed in the press, c T e 7 A 'multi-color printing press comprising a polygonal shaped platen, a cut or the like secured to each of the platen surfaces thereof,

a plurality of ink rolls adapted to travel in a polygonal path and deposit ink of various colors on said cuts or forms, means for caus- 'ing each of said rolls to contact with only one of said cuts or forms, a transfer roll adapted to travel in a polygonal path and thereby receive an impression from each of said cuts or forms whereby the complete impression thereon comprises all the colors used, a printing blanket for receiving the complete impression from the transferroll and means for sion thereon comprises all the colors used, a

depositing the impression thus received onto work placed in the. press with a rolling line contact. v i

8. In a printing press of the character described, a series of chases containing cuts or the like, means for inking the cut or form in each chase with a different color ofink, a transfer roll for receiving the impression from each of said cuts or forms whereby the completed impression on said transfer roll includes all the colors used, a printing roll adjacent said transfer roll, means for moving the transfer roll to contact with the printing roll whereby said printing'roll receivesthe completed impression and means forthereafter depositing the completed impression on work fed to the press a 9. A multi-color printing press comprising a polygonal shaped platen, a cut or the like secured to each of the platen surfaces thereof, a plurality of ink rolls adapted to travel in a polygonal path and deposit ink of various colors on said cuts or forms, means for causing each of said rolls to contact with only one of said cuts or forms, a transfer roll adapted to receive an impression from each of said cuts or forms whereby the complete impreswork carriage for receiving work to be printed, means for depositing the impression from the transfer roll onto the work received roll'contacts with the work on said carriage, the radius'of the semicircular path beingdif fe'rent than the radius of the path of the printing roll whereby the printing roll travels withrespect to the surface of the work on which it prints.

by the work carriage and means for moving the carnage while the work thereonis being printed.

10. In a printing press for printing-diifer- V carried by each-cradle and adapted to ink a certain one of said cuts or forms, a transfer roll cradle pivoted on said rotor, a transfer roll carried thereby and adapted to receive an impression from each of said cuts or forms,

a printing roll carried by said rotor in proximity to said transfer roll, means for rockingthe transfer rollfor causing its contact with the printing roll and thereby depositing the impressions received thereon onto the print; mg roll and a work carr age adapted to support work in position to receive the impres sions from the printing roll.

11. In a printing press, a printing rolladapted to travel in a circular path; and a work carriage adapted to receive work and to travel in a semicircular path as the printing roll contacts with the work on said carriage. '7 12. In a printing press, a printing roll adapted to travel in a circular path and a work carriage adapted to receive-work and .to

travel in a semicircular path as the printing 

